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EXSS 276: Exam 2 Questions And Answers
2025 Update.
In Figure 1 you see a representation of neural _______? - Answer✔Temporal summation
Is Figure 1 representative of neural circuity events that could happen in the central nervous
system? - Answer✔Yes, true.
In Figure 2 what does the A arrow indicate? - Answer✔Depolarization
In Figure 2 what does the B arrow indicate? - Answer✔Repolarization
In Figure 2 what does the C arrow indicate? - Answer✔After-hyperpolarization
In Figure 2 what does the D arrow indicate? - Answer✔Threshold
In Figure 2 what does the E arrow indicate? - Answer✔Resting membrane potentioal
In Figure 2 what does the F arrow indicate? - Answer✔Relative refractory period
The action potential polarity reversal that occurs with initial excitation of a neuron or muscle
fiber is due to _________ channels opening up? - Answer✔Sodium
Voltage gated channels and chemically gated channels (ligand) are actually the exact same
things and work identically. (T/F) - Answer✔False
A muscle cell and a nervous cell action potential operate in almost an identical manner. (T/F) -
Answer✔True
Neurons can be inhibited directly, but muscle fibers cannot (only their motor neuron can be).
(T/F) - Answer✔True
The recruitment threshold for a large motor neuron is ________ than for a smaller motor
neuron. - Answer✔larger
The influence of the sympathetic division of the autonomic nervous system on the heart is? -
Answer✔excitatory
The influence of the sympathetic division of the autonomic nervous system on the glycolytic
energy producing pathway is? - Answer✔excitatory
1
EXSS 276: Exam 2 Questions And Answers
2025 Update.
In Figure 1 you see a representation of neural _______? - Answer✔Temporal summation
Is Figure 1 representative of neural circuity events that could happen in the central nervous
system? - Answer✔Yes, true.
In Figure 2 what does the A arrow indicate? - Answer✔Depolarization
In Figure 2 what does the B arrow indicate? - Answer✔Repolarization
In Figure 2 what does the C arrow indicate? - Answer✔After-hyperpolarization
In Figure 2 what does the D arrow indicate? - Answer✔Threshold
In Figure 2 what does the E arrow indicate? - Answer✔Resting membrane potentioal
In Figure 2 what does the F arrow indicate? - Answer✔Relative refractory period
The action potential polarity reversal that occurs with initial excitation of a neuron or muscle
fiber is due to _________ channels opening up? - Answer✔Sodium
Voltage gated channels and chemically gated channels (ligand) are actually the exact same
things and work identically. (T/F) - Answer✔False
A muscle cell and a nervous cell action potential operate in almost an identical manner. (T/F) -
Answer✔True
Neurons can be inhibited directly, but muscle fibers cannot (only their motor neuron can be).
(T/F) - Answer✔True
The recruitment threshold for a large motor neuron is ________ than for a smaller motor
neuron. - Answer✔larger
The influence of the sympathetic division of the autonomic nervous system on the heart is? -
Answer✔excitatory
The influence of the sympathetic division of the autonomic nervous system on the glycolytic
energy producing pathway is? - Answer✔excitatory
1
